THE "TAMI" FIELD MICROSCOPE BY HENSOLDT, German, second quarter 20th century, signed "Hensoldt, Wetzlar, #7507" and "Tami" (an abbreviation for "taschenmikroscop" -- pocket microscope) and "D.R.P.a" (i.e., "Deutsches Reichs Patent angemeldet"). Finely constructed of sturdy brass, with black enamel and bright plating finishes, the microscope opens from 4" to 8-1/4" (10 - 21 cm) by twin calibrated (40 - 110) drawtubes and knurled tube screw focus. It is equipped with ocular, separable achromatic objective, glass stage, stage clips, rotatable and removable inclined concave mirror, and conical protective cover, all in fine functional condition. Introduced in 1920, the Tami was a successful, high quality instrument sufficiently indestructible for extensive use in the field. Using the two-stage telescoping tubes, and objective front lens removal, one can realize a total magnification range of 35x to 225x! (7099) $425.

American, c.1875, signed on the main tube, "L.M. Prince, Maker, Cincinnati, O." This remarkable American stand (13" tall minimum) has unique design features throughout. The massive three-lobed cast iron base supports the all brass assembly of thick stage plate, curiously shaped rather graceful limb, and main tube driven by exceedingly finely spaced teeth on the steel rackwork and pinion gear (possibly in lieu of separate fine focus control). It is equipped with one ocular, triple-button objective, slide-around slide carrier, substage wheel of stops, and substage mirror in a simple mounting. Condition is good noting losses to the enamel, and one stage slider clip missing. The original finely grained wood case is good, and came with an early handwritten prescription from the office of Cincinnati doctors Holmes, Hinnen, and Stanbery.

SOME UNCOMMON OBJECTIVES

All have the RMS standard thread and are in fine condition, unless noted.(8005)

In addition to these rare objectives, we have in stock a number of 19th and 20th century objectives at prices starting at $25.

J.H. DALLMEYER, LONDON, 4/10", unusual form, bright lacquered brass with case, excellent, by the famous Dallmeyer optical designers. $275.

"EXd. BY HAWKSLEY & SONS, LTD, 1/12", Oil-Immersion, N.A. 1.25, #1298," black and plated brass, with case. $70.

HIGHLEY, LONDON, 1/4", bright lacquered brass with case, excellent, non-RMS small internal thread, uncommon maker (listed by Carpenter in 1868 as maker of Prof. Beale's Clinical and Demonstrating microscopes). $160.

C. REICHERT, VIENNA, "IX, #11220," correction collar, lovely bright and plated brass, excellent, with case. $195.

ROSS, "London, Patent, 1/2 In.," with calibrated correction collar to correct optically for different thicknesses of specimen cover glasses, a beautiful lacquered brass objective with nose cone design, complete with case. $280.

SIDLE AND POALK, PHILADELPHIA, 1-1/2" bright lacquered brass, a very rare example prior to John W. Sidle's 1880 move to Lancaster, Pa., as "John W. Sidle and Co," and as the "Acme Optical Works," producing several Acme stands. $250.

C.A. SPENCER & SONS, 1/8", brass now quite darkened, c.1865 - 75, rare example of Charles Spencer's firm. $140.

SPENCER AND SMITH OPTICAL CO., "Educational, Water Immersion, #1018," bright lacquered brass with case, very fine, very rare example of the 1893-1895 period of this partnership between Herbert Spencer and Fred Smith, in Buffalo, N.Y. $260.

SPENCER LENS CO., "1/10 Water Immersion, N.A. 1.30, #3281," correction collar, bright brass now rather spotted, c.1900. $140.

TOLLES, tall 4" continuously variable to 3" by internal drawtube motion, bright brass with case, innovative low power objective with short working distance and variable power, by this remarkable American inventor and craftsman of superb microscope optics. Extremely rare. $795.

CARL ZEISS, JENA, "D*, 40, 0.75, Wasser-Immersion, #1067," plated brass. $70.